Power-fan.



w. WEISS. POWER PAN.

APPLICATION FILED DEG. 8,-1904.

v i a w mu-4 35 M acto'c'n C5 5 3 m w' ARM UNITED sTA'rns PATENT oFFIoE.

4 Specification of Letters Patent. 7

Patented.March 13, 1906.

Application filed December 8, 1904. Serial No. 35,917-

To all whom it may concern: 7

Be it known that I, GEORGE. W. WEISS, a citizen of the United States, and a resident of 'the city of New York, in the borough of Brooklyn, in the county of Kings and State I of New York, have invented certain new and useful Improvements in Power Fans, of which the following is a-specification.

This invention relates to power-fans, and it consists in the novel features of construc. tion and combinations of parts, as hereinaff ter set forth in detail, and pointed out in the claims. v

Referring to the accom an-ying drawings, forming part of this speci cation, Figure 1 is a front end elevation of a power-fan embodying my invention in operative position upon a sewing-machine power-table and in operative connection with the driving-shaft journaled beneath said table. Fig. 2 is an enlarged rear end elevation of the fan, partly broken away. Fig. 3 is a section through the line 3 3 of Fig. 2 looking'in the direction indicated by the arrow. Fig. 4 is a detail plan of the means for impartingan oscillating movement to the fan proper, and Fig. 5 is a modified form of the supporting-standard for the fan.

A fan embodying my invention may be attached to any desired or suitable sup ort but the same is herein shown as attached to a sewing-machine power-table, (indicated at 1 This-power-table, which is of usual construction, is formed with a central trough2, beneath which in suitable bearings is journaled a driving-shaft 3,. from which the machines (not shown) on the table at opposite sides of the trough are driven. As it is desirable that the fan should be supported centrally above the table-trough 2 in a positionto be conveniently operated from the driving-shaft 3 and also in a position for creating a circulation ofv air that will be uniformly eifective at opposite s'idesof the table, I have provided a fansupporting standard, (indicated enerally by 4,) hich is made in a substantially inverted- Vshaped form, so. that the lower ends of its oppositely-located legs- 6 6 may be attached to the table at opposite sides of the trough2 by suitable fastening. means, such as the screws 7 and its upper central portion located above the said trough be utilized asa support for the fan and itsoperating mechanism.

The fan proper (indicated at. 8)"is attached to one end. of a shaft 9, which is ournaled'in an oscillatory frame or' block 10 ,1. having a shaft 3 throug ivotal connection with the standard 4. This rarne or block 10 may be supported in connection with the standard in any desired position; but I prefer to support the same in a POSIl'JIOII bGtWGGII the standard-legs adjacent to the upper end thereof, the connection between the block and the standard being effected in the present case by means of apivot-.

pin 11, connecting with said block and extending upwardly through an opening in the standard into pivotal connection with the arms 12 12 of abracket 13, which is fixedly I attached to the standard by suitable fastenmg means, such as the screws or rivets 14.

In the present case the pivotpin 1 1 is removably and adjustably sup orted in vertical connection with the brac et-arms 12 12 by means of an adjustable set-collar 15 thereon resting upon one of the said bracket-arms, the said set collar being secured in adjustable connectionwith the pivot-pin by means of a set-screw 16.

The fan-actuating shaft 9 isadapted to be driven from a 1pulley .17 on the lower drivingfor this reason the said shaft 9 is provided the medium of abelt 18, and I with a pulley 19 for the engagement of said belt, which pulley in accordance with my invention is located on the shaft 9 in a position directly between the o positely-located legs 6 6 of the standard, w ereby said legswill serve as guards to a driving-belt operating over said pulley. This feature of my invention-that is, the arrangement and combination of the standard-legs and pulley 19 being such that a driving-belt operating over said pulley will be guarded from opposite sides of the table bythe standardlegs-is a most important one.

The pulley 19, as herein shown, is forme with a centrally-located belt-groove 20 and with-twoguard-flanges 21 21 at its 0 posite ends, the said guard-flanges being preferably arranged with a space therebetweenof less width than the width of the standard-legs, as clearly shown in Fig. 3, and being adapted to retainthe belt on the pulley and wlthin the lateral limits of the. space between the standard-legs in the event of its accidental removal from the central belt-groove of the pulley.

In view of the central location of the fan between the opposite sides of the table it is desirable that it should have a laterally-oscil lating movement in order to create a circulationof air at the-opposite sides of the table alternately. To effect such movement of the fan, I have provided a means for imparting an oscillating movement to the pivoted frame or block 10, which carries the said fan and its actuating-shaft. This means comprises a worm 23 on the shaft 9, meshing with a centrally-pivoted gear 24 on a fixed arm 25 of the block 10, and a link 26, connected at one end with a stationary pivot 27 on an arm 28 of the standard 4 and at its opposite end eccentrically connected with the said gear 24. With this arrangement and combination of parts when the gear 24 is rotated by the shaft 9 and worm 23 it will also be operated by the eccentrically-connected link 20 to have a vibratory movement and so oscillate the connected pivotally-supported frame or block 10. To regulate the extent of oscillation of the block 10, I have provided the gear 24 with a radially-arranged block 30, having a series of openings 31 therein to receive a pin 33, which connects the link 26 with said block. By connecting the link 26 with the block 30 at the center of the gear 24 no vibratory movement will be imparted to the latter but by shifting the point of connection radially outward from the center the extent ofvibration of the gear, and consequently the extent of oscillation of the block 10, will be increased accordingly.

In order that the standard 4 may be adapted to tables of different widths, the oppositely-located legs thereof will preferably be adjustable at their lower ends toward and from each other. To provide for this, the standard will preferably be made of metal sufficiently yielding to permit the legs thereof being readily bent or sprung toward and from each other to a considerable extent, although, if desired, the two legs of the standard may be made separate from the top and hinged thereto, as at 34 in Fig. 5, in which figure the two legs of the standard are indicated at 6 6 and the top at 6".

As it is desirable that the fan should operate with as little noise as possible, I have interposed washers 35, of leather or other sound-deadening material, between the ends of the pulley 19 and the adjacent walls of the block 10 and also between the hub of the fan and the adjacent wall of the said block 10, as most clearly shown in Fig. 3.

What I claim is 1. In a power-fan the combination with a support, of a standard comprising oppositelyarranged legs, a bearing located between said legs and supported thereby, a fanshaft journaled in said bearing, said shaft being arranged with its longitudinal axis extending through the space between said legs, a beltpulley on said shaft arranged to rotate in a plane common to the'legs of the standard, a driving-pulley on the support and in the plane of the first-named pulley and a belt connecting said pulleys, the arrangement being such that the runs of the belt move in the space bounded by said legs andv in a plane common to the latter whereby each leg serves as a guard for the adjacent run of the belt.

2. In a power-fan the combination with a support, of a standard thereon comprising oppositely-arranged legs, a pivoted bearing located between said legs and supported thereby, a fan-shaft journaled in said bearing, said shaft being arranged with its longitudinal axis extending through. the space between said le s, a belt-pulley on said shaft located in a p ane common to the legs of the standard, a driving-pulley on the support arranged to rotate in the plane of the firstnamed pulley, a belt connecting said pulleys, each of said legs serving as a guard for the adjacent run of the belt, and means to oscillate the bearing on its pivot.

3. In a power-fan, the combination with a support, of a standard thereon comprising oppositely-arranged legs, a bearing pivotally suspended between said legs for oscillation in a horizontal plane, a fan-shaft journaled in said bearing, said shaft being arranged with its longitudinal axis extending through the space between said legs, a beltpulley on said shaft located in the plane common to the legs of the standard, a driving-pulley on the support arranged to rotate in the same planeas the first-named pulley, a belt connecting said pulleys, and means actuated by said fanshaft to oscillate said bearing on its pivot.

4. In a power-fan, the combination of a standard comprising op )ositely-disposed legs, a bearing-block pivotally suspended between said legs for oscillation in a horizontal plane, said block having depending projections, a fan-shaft j ournaled in said projections, said shaft being arranged with its longitudinal axis extending through the space between said legs, a belt-pulley on said shaft between. said projections, and means to oscillate the bearing-block on its pivot.

5. In a power-fan, a standard comprising oppositely-arranged legs, a bearing-block pivotally suspended between said legs, means for adjusting said block vertically, a fanshaft j ournaled in said block with its longitudinal axis extending through the space between the legs, a belt-pulley on said shaft, and means to oscillate the block on its pivot.

6. In a power-fan, a standard comprising oppositely-disposed legs, a pivoted bearingblock suspended from said standard between the legs thereof, a fan-shaft journaled. in said block, a fan carried at one end of said shaft and a worm carried on or adjacent the opposite end of said shaft, a belt-pulley on the shaft arranged to rotate in a plane common to the standard-legs, a gear pivoted. on the bearing-block in mesh with said worm, and a link connected at one end with a stationary pivot, the opposite end of said link being eccentrically connected to said gear.

7. In a oppositely-disposedlegs, a pivoted bearing- -block susfiended from said standard between the legs t ereof; a fan-shaft j ournaled in said block, a fan carried at one end of said shaft and a worm carried at or adjacent the opposite end of said shaft, a belt-pulley on the shaft arranged to rotate in a plane common to the standard-legs, a gear pivoted on the bearing-block in mesh withsaidwo'rm, a link connected at one end witha stationary pivot,

the opposite end of said linkbeing eccentric- POWGlFfaIl, a standard comprising ally connected to said gear and means for adjusting the connection between the link and gear toward and away from the center of the 15 latter. a I

Signed at New York, in the county of New York and State of New York, this 2d day of 1 December, A. D. 1904.

' GEORGE W. WEISS.

Witnesses: c 1

CHAS. F. DANE, E. M. FArrH. 

